@@ -1118,29 +1118,38 @@ static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp)
const char *ip6_net = qemu_opt_get(opts, "ipv6-net");
if (ip6_net) {
- char buf[strlen(ip6_net) + 1];
+ gchar **substrings;
+ char *prefix_addr;
+ unsigned long prefix_len = 64; /* Default 64bit prefix length. */
- if (get_str_sep(buf, sizeof(buf), &ip6_net, '/') < 0) {
- /* Default 64bit prefix length. */
- qemu_opt_set(opts, "ipv6-prefix", ip6_net, &error_abort);
- qemu_opt_set_number(opts, "ipv6-prefixlen", 64, &error_abort);
- } else {
+ substrings = g_strsplit(ip6_net, "/", 2);
+ if (!substrings || !substrings[0]) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+ "ipv6-net", "a valid IPv6 prefix");
+ g_strfreev(substrings);
+ goto out;
+ }
+
+ *prefix_addr = substrings[0];
+
+ if (substrings[1]) {
/* User-specified prefix length. */
- unsigned long len;
int err;
- qemu_opt_set(opts, "ipv6-prefix", buf, &error_abort);
- err = qemu_strtoul(ip6_net, NULL, 10, &len);
-
+ err = qemu_strtoul(substrings[1], NULL, 10, &prefix_len);
if (err) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
"ipv6-prefixlen", "a number");
+ g_strfreev(substrings);
goto out;
}
-
- qemu_opt_set_number(opts, "ipv6-prefixlen", len, &error_abort);
}
+
+ qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort);
+ qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len,
+ &error_abort);
qemu_opt_unset(opts, "ipv6-net");
+ g_strfreev(substrings);
}
}
net_client_init() uses a variable length array to store the prefix of 'ipv6-net' parameter (e.g. if ipv6-net=fec0::0/64, the prefix is 'fec0::0'). This patch introduces g_strsplit() to split the 'ipv6-net' parameter, so we can remove the variable length array. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> --- net/net.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-)